Classification of raw coffee beans-Starbucks coffee bean grinding grade

Classification of raw coffee beans-Starbucks coffee bean grinding grade

Treatment process

First pour the coffee beans into a large tank, and the poorly developed beans will float on the surface and pick up the ripe and full fruits that sink to the bottom of the water.

The tile is exposed to the sun, often flipped over, picking out defects.

When the water content in the coffee beans is reduced to 10%-14%, the peel pectin can be knocked off with a sheller, and the whole solarization method is complete.

Coffee beans from the same origin must be large and full, which means that the coffee fruit is picked only when it grows to its best condition, and the beans in the coffee fruit can reflect the best flavor.

This grading is achieved through a sieve, where the coffee beans are placed on the sieve. After shaking back and forth, the beans smaller than the mesh are screened out, and the beans are screened again with a smaller sieve, so that after layers of selection, the coffee beans can be graded. The mesh size is calculated in 1 stroke 64 inches, the number is 19 if the diameter is 19ax 64 inches, and the number is 16 if the mesh is 16 picks 64 inches. Pingdou 20-19 is very large, 18 is big, 17 is quasi-large, 16 is ordinary, 15 is medium, 14 is small, and 13-12 is extra-small.

Mode of production

Washing type

In the sink, after rubbing with water and utensils, the pulp and gum are removed and dried, which is called water-washed coffee beans with uniform quality.

Non-washing type

After the sun is naturally dried, the pulp and peel is removed by a sheller, and its quality is unstable.

The shape of the bean

Generally speaking, the fruit of coffee is made up of two oval seeds opposite each other. The side that connects with each other is a flat joint, so it is called flat bean. But some are made up of a round seed, and its taste is no different.

Growth altitude

According to the elevation of the cultivated land, it can be divided into three, four, seven and other grades. Generally speaking, the quality of highland beans is better than that of lowland beans, and the price is higher because of the increase in freight.

Grade name elevation (m)

More than 1500 of special grade beans

High-quality beans 1200 to 1500

Medium beans 1000 to 1200

Special water washing beans 900 to 1000

Wash beans in good water 760 to 900

Specially washed beans 610 to 760

Wash beans below 610 with excellent water

four

Quality

According to the statistical method, the type and quantity of dopants in a certain amount of samples are converted into percentage (that is, the number of defects), and the basis for determining the quality class is that the smaller the number of defects is, the higher the quality is.

five

Taste

The more famous is the unique "Blue Mountain Coffee". Other places such as Brazil, Haiti, Kenya, say and Columbia Coffee in the United States also have their own taste testing methods, which can be exported only after taste testing.